433220340 has 48 divisors (see below), whose sum is σ = 1386306432. Its totient is φ = 99021696.

The previous prime is 433220317. The next prime is 433220371. The reversal of 433220340 is 43022334.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 515319 + ... + 516158.

It is an arithmetic number, because the mean of its divisors is an integer number (28881384).

Almost surely, 2^433220340 is an apocalyptic number.

It is an amenable number.

433220340 is an abundant number, since it is smaller than the sum of its proper divisors (953086092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

433220340 is a wasteful number, since it uses less digits than its factorization.

433220340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031496 (or 1031494 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 433220340 is about 20813.9458056371. The cubic root of 433220340 is about 756.6637811176.

Adding to 433220340 its reverse (43022334), we get a palindrome (476242674).

The spelling of 433220340 in words is "four hundred thirty-three million, two hundred twenty thousand, three hundred forty".